Christie McHugh's five-year-old son and six-month-old daughter were with her when she died, following an apparent road rage incident.
She is believed to have suffered fatal head injuries after falling off the bonnet of a car.
A witness has described her lying in the road bleeding from a head wound.
Flowers have been left at the scene where she died.
More top news
A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.